Theese devices support linux out of the box. Try installing a proper linux distro on your phone and good luck finding a graphics driver that is not sotware rendering
I had the same problem on my PC.
Journald was spamming PCI errors all the time and the disk was filling up quite quickly.
I ended up disabling journald and rsyslogd and the problem was fixed.
You can delete the log files, if you find them
Yes, Linux (maybe it's just an Ubuntu problem) does not run well in Virtual box.
I could get it to boot 1/10 times and was quite unstable.
But that was two years ago, maybe things have changed
Your clipboard icon looks like that because you are using the default plasma theme. Also, the Whatsapp icon opens an app which is actually just a browser
*8 bit audio and 15 bit color